Fujitsu Eternus DX60 User Manual page 37

Chapter 1 Overview
> 1.3 Functions
Table 1.7
various disk configurations.
Table 1.7
RAID level
RAID1
RAID1+0
RAID5
RAID5+0
RAID6
*1: The time required to rebuild a 100GB volume of the indicated RAID level, number and type of disks
when there is no concurrent server I/O.
Table 1.8
for various disk configurations.
Table 1.8
RAID level
RAID1
RAID1+0
RAID5
RAID5+0
RAID6
*1: The time required to copyback a 100GB volume of the indicated RAID level, number and type of disks
when there is no concurrent server I/O.
P3AM-3042-06ENZ0 ETERNUS DX60/DX80/DX90 Disk storage system User Guide
shows the times (for 100GB volumes) required for the rebuild process to complete for
Rebuild process times (for SAS disks and Nearline SAS disks)
No. of
disks
3.5" SAS disks
2 Approx. 20 minutes/100GB
8 Approx. 5 minutes/100GB
5 Approx. 10 minutes/100GB
6 Approx. 7 minutes/100GB
6 Approx. 13 minutes/100GB
shows the times (for 100GB volumes) required for the copyback process to complete
Copyback process times (for SAS disks and Nearline SAS disks)
No. of
disks
3.5" SAS disks
2 Approx. 20 minutes/100GB
8 Approx. 5 minutes/100GB
5 Approx. 7 minutes/100GB
6 Approx. 5 minutes/100GB
6 Approx. 13 minutes/100GB
Rebuild process time (*1)
2.5" SAS disks
Approx. 27 minutes/100GB
Approx. 7 minutes/100GB
Approx. 10 minutes/100GB
Approx. 7 minutes/100GB
Approx. 13 minutes/100GB
Copyback process time (*1)
2.5" SAS disks
Approx. 27 minutes/100GB
Approx. 7 minutes/100GB
Approx. 10 minutes/100GB
Approx. 7 minutes/100GB
Approx. 13 minutes/100GB
37
Nearline SAS disks
Approx. 47 minutes/100GB
Approx. 11 minutes/100GB
Approx. 15 minutes/100GB
Approx. 11 minutes/100GB
Approx. 21 minutes/100GB
Nearline SAS disks
Approx. 49 minutes/100GB
Approx. 11 minutes/100GB
Approx. 16 minutes/100GB
Approx. 11 minutes/100GB
Approx. 20 minutes/100GB
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